Volume 382, Number 2, FebruaryI 2002
|Page(s)||556 - 562|
|Section||Interstellar and circumstellar matter|
|Published online||15 February 2002|
Pulsational frequencies in the δ Scuti stars V624 Tauri and HD 23194
Results of the STEPHI X campaign on the Pleiades cluster
Instituto de Astrofísica de Canarias, 38205 La Laguna Tenerife, Spain
2 Instituto de Astronomía de la UNAM, Ap.P. 877, Ensenada, BC, Mexico
3 Observatoire de Paris-Meudon, DASGAL, UMR 8633, 92195 Meudon, France
4 Beijing Observatory, Chinese Academy of Sciences, Beijing, PR China
5 Departamento de Astrofísica, Universidad de La Laguna, Tenerife, Spain
6 Observatoire de Paris-Meudon, DAEC, UMR 8632, 92195 Meudon, France
7 Observatoire Midi-Pyrénées, 31400 Toulouse, France
Corresponding author: L. Fox-Machado, email@example.com
Accepted: 13 November 2001
The results of the tenth multi-site campaign of the STEPHI network are reported. The δ Scuti stars V624 Tau (HD 23156) and HD 23194, belonging to the Pleiades cluster, were observed photometrically for 34 days on three continents during 1999 November–December. An overall run of 343 hours of data was collected. Seven frequencies for V624 Tau and two frequencies for HD 23194 have been found above a 99% confidence level. These results greatly improve those found in previous studies with much less data. A preliminary comparison of observed and theoretical frequencies suggests that both stars may oscillate with radial and non-radial p modes of radial orders typical among δ Scuti stars.
Key words: stars: oscillations / stars: variables: δ Sct / stars: individual: HD 23156, HD 23194
© ESO, 2002
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